/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package info.niwota.ezb;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.InputStream;

import android.content.ContentResolver;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.ParcelFileDescriptor;
import android.provider.MediaStore.Images.ImageColumns;
import android.util.Log;

public class UriImage implements IImage {
	private static final String TAG = "UriImage";
	final Uri mUri;
	// private final IImageList mContainer;
	private final ContentResolver mContentResolver;

	public UriImage(ContentResolver cr, Uri uri) {
		mContentResolver = cr;
		mUri = uri;
	}

	public int getDegreesRotated() {
		return 0;
	}

	public String getDataPath() {
		if (mUri.getScheme().equals("file")) {
			return mUri.getPath();
		} else {
			Cursor c = mContentResolver.query(mUri,
					new String[] { ImageColumns.DATA }, null, null, null);
			c.moveToFirst();
			String p = c.getString(0);
			c.close();
			return p;
		}
	}

	private InputStream getInputStream() {
		try {
			if (mUri.getScheme().equals("file")) {
				return new java.io.FileInputStream(mUri.getPath());
			} else {
				return mContentResolver.openInputStream(mUri);
			}
		} catch (FileNotFoundException ex) {
			return null;
		}
	}

	private ParcelFileDescriptor getPFD() {
		try {
			String s = mUri.getScheme();
			if (s.equals("file")) {
				String path = mUri.getPath();
				return ParcelFileDescriptor.open(new File(path),
						ParcelFileDescriptor.MODE_READ_ONLY);
			} else {
				return mContentResolver.openFileDescriptor(mUri, "r");
			}
		} catch (Exception e) {
			return null;
		}
	}

	public Bitmap fullSizeBitmap(int minSideLength, int maxNumberOfPixels) {
		return fullSizeBitmap(minSideLength, maxNumberOfPixels,
				IImage.ROTATE_AS_NEEDED, IImage.NO_NATIVE);
	}

	public Bitmap fullSizeBitmap(int minSideLength, int maxNumberOfPixels,
			boolean rotateAsNeeded) {
		return fullSizeBitmap(minSideLength, maxNumberOfPixels, rotateAsNeeded,
				IImage.NO_NATIVE);
	}

	public Bitmap fullSizeBitmap(int minSideLength, int maxNumberOfPixels,
			boolean x, boolean useNative) {
		try {
			ParcelFileDescriptor pfdInput = getPFD();
			Bitmap b = Util.makeBitmap(minSideLength, maxNumberOfPixels,
					pfdInput, useNative);
			return b;
		} catch (Error e) {
			Log.e(TAG, "got exception decoding bitmap ", e);
			return null;
		}
	}

	public Uri fullSizeImageUri() {
		return mUri;
	}

	public InputStream fullSizeImageData() {
		return getInputStream();
	}

	public Bitmap miniThumbBitmap() {
		return thumbBitmap(IImage.ROTATE_AS_NEEDED);
	}

	public String getTitle() {
		return mUri.toString();
	}

	public String getDisplayName() {
		return getTitle();
	}

	public Bitmap thumbBitmap(boolean rotateAsNeeded) {
		return fullSizeBitmap(THUMBNAIL_TARGET_SIZE, THUMBNAIL_MAX_NUM_PIXELS,
				rotateAsNeeded);
	}

	private BitmapFactory.Options snifBitmapOptions() {
		ParcelFileDescriptor input = getPFD();
		if (input == null)
			return null;
		try {
			BitmapFactory.Options options = new BitmapFactory.Options();
			options.inJustDecodeBounds = true;
			BitmapManager.instance().decodeFileDescriptor(
					input.getFileDescriptor(), options);
			return options;
		} finally {
			Util.closeSilently(input);
		}
	}

	public String getMimeType() {
		BitmapFactory.Options options = snifBitmapOptions();
		return (options != null && options.outMimeType != null) ? options.outMimeType
				: "";
	}

	public int getHeight() {
		BitmapFactory.Options options = snifBitmapOptions();
		return (options != null) ? options.outHeight : 0;
	}

	public int getWidth() {
		BitmapFactory.Options options = snifBitmapOptions();
		return (options != null) ? options.outWidth : 0;
	}

	public long fullSizeImageId() {
		return 0;
	}

	public long getDateTaken() {
		return 0;
	}

	public boolean rotateImageBy(int degrees) {
		return false;
	}
}
